Central venous catheter maintenance mold

Abstract

This invention provides a central venous catheter (CVC) maintenance mold, comprising a mold body, a blood bottle, a fixing structure, a simulation layer, and a CVC. The bottom of the inner cavity of the mold body has a fixing structure for securing the blood bottle. One side of the mold body has a door for replacing the blood bottle. The top of the mold body has a sterilization plane, on which the simulation layer is located. A puncture hole is machined on both the sterilization plane and the simulation layer, through which the CVC is inserted into the blood bottle. This invention realistically replicates CVC maintenance, allowing students and nurses to practice and be assessed on the mold; it ensures the safety of CVC maintenance, avoids adverse consequences caused by simulated training on mannequins, and reduces the incidence of CVC-related infections.

Description

Technical Field

[0001] This utility model belongs to the field of molds, specifically relating to a central venous catheter maintenance mold suitable for hospitals and schools, used for teaching, training, practical training and assessment. Background Technology

[0002] A central venous catheter is a tubing made of silicone and PVC that is placed in a large vein in the human body. It is commonly used in clinical departments such as emergency departments, ICU wards, anesthesiology departments, and hemodialysis units. Central venous catheters are prone to infection during their indwelling period. In order to reduce the risk of infection and ensure patient safety, central venous catheters need to be maintained regularly.

[0003] However, in training programs at schools or hospitals, central venous catheter maintenance training is typically conducted using mannequins. While this method allows students or nurses to become familiar with the procedures and techniques, the lack of simulated blood on the mannequins makes it impossible to accurately assess the operator's mastery, accuracy, and consistency of the procedure. When encountering patients with indwelling catheters, the fact that training was only conducted on mannequins can potentially harm the patient and increase the incidence of central venous catheter-related infections. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by providing a central venous catheter maintenance mold. This mold can realistically reproduce central venous catheter maintenance, allowing all operations of central venous catheter maintenance, such as catheter assessment, replacement of infusion connectors, flushing and sealing of the tubing, dressing removal, skin disinfection, catheter disinfection, and dressing replacement, to be performed on the mold. This allows students or nurses to conduct practical exercises, training, and assessments on the mold, ensuring the safety of central venous catheter maintenance, avoiding adverse consequences caused by simulated training on mannequins, and reducing the incidence of central venous catheter-related infections.

[0005] To achieve the above objectives, this utility model provides a central venous catheter maintenance mold, including a mold body, a blood bottle, a fixing structure, a simulation layer, and a central venous catheter. The bottom of the inner cavity of the mold body is provided with a fixing structure for fixing the blood bottle. One side of the mold body is provided with a door for replacing the blood bottle. The top of the mold body is provided with a sterilization plane. The simulation layer is provided on the sterilization plane. A puncture hole is machined on both the sterilization plane and the simulation layer. The central venous catheter is inserted into the blood bottle through the puncture hole.

[0006] As a further optimization, the fixing structure is composed of multiple interlocking partitions.

[0007] As a further optimization, the mold body is made of a transparent material.

[0008] As a further optimization, the simulation layer is a panel made of silicone material.

[0009] Advantages and beneficial effects of this utility model

[0010] 1. This utility model helps to enhance the visualization of teaching and training. The intuitive demonstration of physical objects plays a key role in students' perception and understanding of abstract knowledge. Appropriately carrying out physical operations in teaching can effectively improve teaching quality, improve the previous monotonous and boring teaching situation, and bring out the abstract knowledge in teaching, stimulate students' interest, and enhance students' understanding.

[0011] 2. This utility model enables students or nurses to combine theory with practice through hands-on exercises, and verifies the results through practice, thus avoiding the adverse consequences caused by simulated training on mannequins.

[0012] 3. After teaching, training, practice and assessment through this utility model, the accuracy and safety of the operation can be improved when performing the procedure on patients. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure provided in the embodiment of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the mold body provided in this embodiment of the utility model.

[0016] Reference numerals: mold body 1, door 11, blood bottle 2, fixing structure 3, partition plate 31, simulation layer 4, central venous catheter 5, catheter 51, connector 52, extension tube 53, sealing clamp 54, catheter port 55, and catheter connector 56. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mold referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figure 1 and Figure 2 As shown, the central venous catheter maintenance mold includes a mold body 1, a blood bottle 2, a fixing structure 3, a simulation layer 4, and a central venous catheter 5. The mold body 1 is a cuboid measuring 23.5cm*24cm*20.5cm. The bottom of the inner cavity of the mold body 1 has a fixing structure 3 for fixing the blood bottle 2. The blood bottle 2 is housed within the fixing structure 3, and the blood bottle 2 contains simulated blood, which simulates venous blood in human veins. The fixing structure 3 consists of multiple intersecting partitions 31. Since each partition 31 has multiple insertion holes, the insertion position of two partitions 31 can be adjusted according to the size of the blood bottle 2. The left side of the mold body 1 has a door 11 for replacing the blood bottle 2, facilitating replacement and retrieval. The top of the mold body 1... A sterilization surface is provided, on which a simulation layer 4 is provided. The simulation layer 4 is a panel made of silicone material to simulate human skin. A puncture hole is machined on both the sterilization surface and the simulation layer 4. The position of the puncture hole corresponds to the position of the blood bottle 2. The central venous catheter 5 is inserted into the blood bottle 2 through the puncture hole, thereby simulating the state of the patient during the indwelling catheter period after surgery. In order to make it more realistic, the catheter 51 that is exposed outside the simulation layer 4 can be coiled into an L-shaped bend, an S-shaped bend or a U-shaped bend. A transparent dressing is pasted without tension with the puncture hole as the center. The thumb is used to pinch along the direction of the catheter 51 to the puncture hole to shape it. The transparent dressing is smoothed out from the middle to both sides. Then, the first tape is used to fix the lower edge of the transparent dressing in a butterfly shape, and the second tape is used to fix it horizontally above the butterfly cross tape. This facilitates teaching, practice and assessment of central venous catheter maintenance on this mold.

[0019] As a further optimization, the mold body 1 is made of transparent material, which makes it convenient for teachers and operators to view the simulated blood in the blood bottle.

[0020] The operational method for central venous catheter maintenance according to this application

[0021] 1. Place this application on a flat surface to replace a mannequin for practical exercises.

[0022] 2. Assessment: Disinfect hands, put on sterile gloves, and observe the area around the puncture site for bleeding, exudate, curling or dampness of the transparent dressing, and whether the catheter has dislodged or kinked. Touch the simulated layer 4 around the puncture site to assess for the formation of induration.

[0023] 3. Replace the infusion connector: Close the sealing clamp 54, take a 10ml pre-flushing catheter flusher to release the resistance, install the new infusion connector on the pre-flushing catheter flusher, tear open the alcohol swab, hold the top of the catheter connector 56 with one hand and remove the catheter connector 56 with the other hand, disinfect the cross-section and periphery of the catheter port 55 with an alcohol swab, wipe vigorously in all directions for 5-15 seconds, and ensure that the disinfectant is fully dry before connecting the new infusion connector 56 with the pre-flushing catheter flusher to the catheter port 55.

[0024] 4. Flushing and sealing the catheter: Open the sealing clamp 54, and use the pre-flushing catheter flusher to aspirate simulated blood into the extension tube 53. Do not aspirate back to the infusion connector 56 or the pre-flushing catheter flusher to assess catheter function. Flush the catheter 51 with normal saline in a pulsatile manner, and then use dilute heparinized saline to perform positive pressure sealing. After performing positive pressure sealing, remove the pre-flushing catheter flusher.

[0025] 5. Remove the transparent dressing: Close the clamp 54, gently press the puncture point with your thumb, and pull the edge of the transparent dressing parallel to the "0" angle around the perimeter to fix the catheter. Remove the original transparent dressing from bottom to top 180°, and assess whether there is any bleeding or seepage at the puncture site; check whether there is any change in the length of the catheter outside the body.

[0026] 6. Disinfect the skin (simulated layer 4): Hold the first alcohol cotton ball with one hand, and cover the infusion connector 56 with sterile gauze with the other hand. Lift the catheter 51, avoiding the puncture point diameter of 1cm and the catheter 51. Perform spiral disinfection on simulated layer 4, with a disinfection diameter ≥20cm. After it is fully dry, place the catheter 51 flat on the sterile gauze and use a glucose chlorhexidine cotton ball for disinfection (disinfection method: the proximal end of the puncture hole is on top, and the distal end is on the bottom. Rub repeatedly in a Z-shape according to the order of the puncture hole, with the width of each Z-shape being 20cm and the height of multiple Z-shapes stacked being 10cm. Use one chlorhexidine cotton ball for each part. Since the disinfection area on the left and right sides covers the area on the top and bottom sides, one disinfection is equivalent to two disinfection requirements).

[0027] 7. Disinfect the catheter: Hold the disinfectant cotton ball in the puncture hole for 1 second, disinfect from the puncture hole to the tail end of the catheter 51, disinfect to the wing-shaped part of the connector 52, lift the catheter 51, disinfect the top, bottom, left and right sides of the catheter once, use a cotton ball for each side, remove the gauze, and put the catheter down.

[0028] 8. Change the transparent dressing: After the disinfected simulation layer 4 is completely dry, adjust the position of the catheter. Coil the catheter 51 that is outside the simulation layer 4 into an L-shaped bend, S-shaped bend, or U-shaped bend. With the puncture hole as the center, apply the transparent dressing without tension. Pinch along the direction of the catheter 51 to the puncture hole to shape it. Smooth the transparent dressing from the middle to both sides. Then, fix the lower edge of the transparent dressing with the first tape in a butterfly shape. Fix the second tape horizontally above the butterfly shape. Remove gloves and disinfect hands. Record the puncture date, maintenance date, exposed catheter length, and responsible person on the tape and fix it to the edge of the transparent dressing. Secure it properly with the catheter fixation device.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. A central venous catheter maintenance mold, characterized by: The device includes a mold body (1), a blood bottle (2), a fixing structure (3), a simulation layer (4), and a central venous catheter (5). The bottom of the inner cavity of the mold body (1) is provided with a fixing structure (3) for fixing the blood bottle (2). One side of the mold body (1) is provided with a door (11) for replacing the blood bottle (2). The top of the mold body (1) is provided with a sterilization plane. The simulation layer (4) is provided on the sterilization plane. A puncture hole is machined on both the sterilization plane and the simulation layer (4). The central venous catheter (5) is inserted into the blood bottle (2) through the puncture hole.

2. The central venous catheter maintenance mold of claim 1, wherein: The fixed structure (3) is composed of multiple intersecting partition plates (31).

3. The central venous catheter maintenance mold of claim 1, wherein: The mold body (1) is made of transparent material.

4. The central venous catheter maintenance mold of claim 1, wherein: The simulation layer (4) is a panel made of silicone material.

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